William godfrey



N0. 608,450. Patented Aug. 2, I898. W. GODFREY.

SEWER TRAP.

(Application filed. Jan. 21, 1897) I (No Model.)

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UNITED STATES PATENT OFrrosE.

WILLIAM GODFREY, OF NEXV YORK, N. Y.

SEWER-TRAP.

SPECIFICATION forming part of Letters Patent No. 608,450, dated August 2, 1898. Application filed January 21, 1897. Serial No. 620,051. (No model.)

. the city and countyof New York and State of New York, haveinvented an Improvement in Sewer-Traps, of which the following is a specification.

Myinvention has reference to sewer or drain valves; and it consists of certain improvements which are fully set forth in the following specification and shown in the accompanying drawings, which form a part thereof. The object of my invention is to provide a practical form of sewer-valve suitable for waste-pipes and drainage-pipes generally which shall be positive in action, durable in use, and cheap in construction considering the advantages secured.

Furthermore, my object is to so form the valve that the pivotedvalve proper may be readily removed for cleaning purposes and shall so normally operate as to secure in effect the action of a trap or seal by holding the water in the inlet side of the valve to a sufficient height to seal the. pipe.

My invention is adapted to pipes leading from sinks, vbath-tubs, washtubs, and lavatory apparatus generally, as well as for the drainage-pipes directly leading to the sewers.

In carrying out my invention I form the valve structure of two castings constituting an inlet-sectionand outlet-section .suitably united and provided for attachment to supply discharge-pipes. The inlet-section adjacent to the outlet-section is provided with a valve-seat of non-oxidizable or other metal, such as brass, which is preferably secured in position by having the metal of the inlet-section cast upon it. The valve-seat proper is formed obliquely and receives a gravity-actuating pivoted or flap valve of con-.

siderable weight and preferably formedof an alloy, such as type-metal, which shall be more ductile than the seat. The upper part of the outlet or discharge. section is formed with a hand-hole normallycclosed by a cover, the hole being sufficiently large to permit the in sertionand removal of. the automatic valve.

My invention comprehends, further, the pivoting of the valve to a removable support or'frame detaohably secured in the outletchamber and adapted to be removed,'together with the valve, through the hand-hole.

My invention also coinprehends details of construction, all of which will be better understood. by reference to the accompanying drawings, in which V Figure l is a sectional elevation on line y y of Fig. 3, showing the interior construction of my improved valve. Fig. 2 is a vertical section of my improved valve on line a: m of Fig. 1. Fig. 3 is a plan view of my improved valve. Fig. 4 is a perspective view of the valveand its support removed. Fig. 5 is a cross -.section similar to Fig. '2, showing a modified manner of supporting the Valve. Fig. 6 is a section similar to Fig. 1, showing a modified form of supporting the valve. Fig. 7 is a sectional elevation corresponding to Fig. 1, but showing the form of valve adapted to drainage-pipes leading to sewers; and Fig. 8 is a sectional view of a modified form of my valve.

- A is the inlet-section, and D is the outlet or discharge section,and these two parts are respectively provided with flanges E F,'w hich are secured together by screws or bolts f to make a liquid-tight joint. The inlet-section is formed with a curvature to give considerable fall to the water, so as to readily flush itself clear. Its end adjacent to the outletsection is provided with a valve-seat'B, formed of .non-oxidizable metal, such as brass or bronze, and made with a shoulder b, about which the iron of the section A is cast. In this manner the valve-seat B is cheaply secured to the inlet-section and is so placed about the core in casting that the surface 011 the inside of the parts A and B are flush and form no obstruction to. the passage of the water or material. The valve-seat is directed obliquely downward and has an oblique seatingedge 0, upon which the valve F seats itself. by gravity. The thickness of the seating edge 0 is preferably small, so as to oifer very little chance for the lodging of obstructions, the danger from this fact being lessened proportionally to the reduction in the surface of the seating edge. The outlet or discharge chamber D has its lower portion D arranged considerably below the lower part of the valve-seat, so as to allow the proper fall and clearance to the materials discharged under the valve to secure the proper relief. dis the discharge end of the outlet-section. The upper part of the section Dis formed with a hand-hole E, which is bounded on the three sides by the walls of the section D and upon the other side by the surface of the section A. This hand-hole is normally closed by a cover or cap 6, which is properly screwed down to make a tight joint.

II is the pivoted or flap valve, and is preferably formed of a material or alloy softer than the valve-seat B, a metal such as typemetal being excellently adapted to the purpose. The valve II is loosely pivoted to the lugs 2 of a supporting-plate I by means of a rod or journal J. The plate I is inserted between the side walls of the outlet-section D and interposed between the face of the section A and lugs 7t and the end of the flange K. Vertically this plate I is limited in its movement by coming in contact with the valve-seat l3. 3y simply removing the plate or cover 6 the valve II and its supportingplate I may be quickly removed and the interior of the apparatus cleaned, thus making the valve as an entirety exceptionally desir able for practical use. The valve II should be of sufficient weight that under the action of gravity it will properly seat itself upon the valveseat to make a gas-tight joint, and to secure this end without excessive expense it is desirable that the hinge-joint shall be loose, so that the valve may adapt itself to the seat independently of its connection with the plate I. The connection with the plateI limits the downward tendency of the valve, but is not designed in any wise to interfere or disturb its proper adjustment upon its seat. By making the weight of the valve ll sufficient a body of water may be normally supported back of the valve and in the inlet-section adapted to hermetically seal the valve, as shown in Fig. l. The accumulation of this water will come from the dripping in the pipe after the main discharge has taken place and the valve II reseated itself. In this manner the sewervalve in effect performs the function of a trap or water seal as well. Owing to the manner of constructing my valve and its seat this result can readily be secured, whereas with the ordinary iron seats it is practically impossible to make a tight joint for any considerable length of time.

In the construction shown in Fig. 1 the sewer-valve is especially designed for connection with washbasins, sinks, bath-tubs, &c., and to facilitate the application of the valve I provide it with a vertical inlet-pipe L and a discharge-pipe M, respectively secured to the inlet and discharge sections A and I) by screwcoup'lingsl and m. The lead pipes in the house are secured to the pipes I and M by wiped or other joints.

\Vhen my improved valve is used in connection with the drainage-pipes, which are more or less horizontal and connected directly with the sewer, I prefer to form the inlet and discharge sections as indicated in Fig. 7,which construction has all the advantages of that shown in Fig. 1, but specially adapted to a slightly-oblique pipe approaching more nearly the horizontal.

The valve II may be detachablyconnected in other manner than that shown in Figs. 1, 2, 3, and I. For instance, lugs I maybe provided in any suitable manner and a spring pivot-rod J employed to detachably connect the valve II to said lugs, as shown in Fig. 5, or in lieu thereof the cap 6 may be provided with downwardly-extending lugs which fit about the pivot-rod .I to hold the valve II in proper position, as indicated in Fig. 6. In all of these cases, however, the necessary loose play should be provided to enable the valve to properly seat itself and also to permit the ready removal of the valve from the dischargesection whenever desired for cleaning purposes or repairs.

In Fig. 8 I have shown the discharge-section formed with a water seal or trap S between the valve II and discharge (Z, which may have a vent-orifice T at the upper part.

\Vhile I prefer the construction shown, I do not limit myself to the exact details, as they may be modified in various ways without departing from the principles of my invention.

\Vhat I claim as new, and desire to secure by Letters Patent, is-

1. In a drain-valve, the combination of the inlet-section having a tubular valve-seat of nonoxidizable metal permanently secured thereto formed with an oblique seating-rim and having its interior surface downwardly sloping and continuous with the interior surface of the inlet-section, a discharge-section secured to the inlet-section by a joint which incloses the juncture of the valve-seat with the inlet-section and receiving the valve-seat so as to leave a clearance-space about its seatingrim interposed between said rim and walls of the discharge-section, and a pivoted valve within the discharge-section looselysupported at the top independent of the valve-seat and normally held in an obliqueposition and seating itself upon the val ve-seat by virtue of its weight.

2. In a drain-valve, the combination of the inlet-section having a tubular valve-seat of non-oxidizable metal permanently secured thereto and having its interior surface continuous with the interiorsurface of the inletsection, a discharge-section secured to the inlet-section independent of the val ve-seat and by a joint which incloses the j uneture of the valve-seat and inlet-section and receiving the valve-seat within its body without contact therewith, and a pivoted valve loosely supported within the discharge-section seating itself upon the valve-seat.

3. In a drain-valve, the combination of the inlet-section having a tubular valve-seat of non-oxidizable metal secured thereto byhaving the in let-section cast thereon and having its interior surface continuous with the inte rior surface of the inlet-section, a discharge section detachably secured to the inlet-section by a single transverse joint independ ently of the valve-seat and inclosing the joint between the valve-seat and inlet-chamber, a pivoted valve within the discharge-section seating itself upon the valve-seat, a removable support detachably connected within the discharge-chamber, and a loose pivot connection between the valve and said support.

4. A sewer-valve consisting of an inlet-section having a downward aperture or fall hav-' ing capacity for holding water to submerge the Valve-seat, and a tubular valve-seat of non-oxidizable metal secured thereto by having one end cast therein and havingits inner surface directed obliquely downward and continuous with the interior of the inlet-section,

in combination with a discharge-section secured directly to the inlet-section by a joint inclosing the juncture of the inlet-section and valve-seat, and a heavy pivoted gravity-actuated valve loosely hung in the discharge-section and resting upon the valve-seat so as to normally sustain a column of water in the inlet-section sufficient to submerge the valveseat;

5. In a drain-valve, the'combination of the V inlet-section having a valve-seat and a transverse flat flange at a distance from the seating edge of the valve-seat, a discharge-section also having a transverse flange secured to the inlet-section and receiving the valve-seat, bolts reuniting the flanges, a pivoted valve within the discharge section seating itself upon the valve-seat, aremovable support detachably arranged within the discharge-chamber for sustaining the valve and held in position within the dischargechamber by the flange of the inlet-section and extensions or lugs on the discharge-section, and a removable cover or plate overlappingthe inlet and discharge sections to retain the support against rising.

6. In a drain-valve, the combination of the inlet-section having'a long tubular valve-seat of non-oxidizable metal cast therein, a discharge-section bolted to the inlet-section so as to inclose the union of the valve-seat with the inlet-section and receiving the valve-seat and further provided -with a water seal or trap, a pivoted valve within the dischargesection seating itself upon the valve-seat, a removable support detachably supported above the tubular seat within the dischargechamber and held between the inlet and discharge chambers for sustaining the Valve in position, a removable cover or plate overlapping the inlet and discharge sections to reinlet-section having a tubular dischargeopening and a discharge-section detachably bolted together, a laterally-extending tubular valve-seat of non-oxidizable metal having an oblique seating edge arranged within the discharge-section but secured directly to the inlet-section so that its joint is inclosed within the joint uniting the inlet and discharge chambers and further having an internal di ameter corresponding to the diameter of the tubular discharge-opening of the inlet-section to form a continuous or smooth surface over the joint, and a pivoted valve in the discharge-chamber movable to or from the valveseat and normally resting thereon under the action of the valve-body itself.

8. In a sewer or drain valve, the combination of an inlet-section having cast therein a. rigid metallic tubular valve-seat of less thick ness directed obliquely downward but of an internaldiameter corresponding with the internal diameter of the inlet-section, with a discharge-section inclosing the tubular valveseat and having a considerable clearance or relief space below the lower seating edge of the valve-seat partly made up of the space secured by reducing thethickness of the valveseat, a joint uniting the inlet and discharge sections and inclosing the j unctureof the inlet-section and valve-seat, a weighted and de tachably-supported valve in the dischargesection adapted tooperate in connection with the valve-seat, and a normally-sealed handhole in the discharge-section.

9. In a drain-valve, the combination of the inlet-section A having the tubular valve-seat B cast therein at b and also provided witha flange E, the discharge-chamber D having a flange F bolted to the flange E inclosing the valve-seat B and having a hand-hole E at the top, a removable support I held in place between the inlet-chamber and discharge-charm her, a valve II loosely pivoted to the support J, and-a cap or cover 6 for the hand-hole adapted to hold the support J against rising.

In testimony of which invention I have hereunto set my hand.

'WILLIAM GODFREY.

Witnesses:

ASA A. SPEAR, HENRY DE HONDT. 

